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2011-2014 Mustangs
Engine/Tuning
Synthetic Oils
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<blockquote data-quote="3Mach1" data-source="post: 10794190" data-attributes="member: 135424"><p>Here is my question. I have an older 03 year 4.6 4v engine and all I have ever put in it is motorcraft 5w 20. I dont race it or beat on it but on occasion like to open it up. </p><p></p><p>With all I have read here would I be better off to run 10w 30 motorcraft or 5w 30? It runs year round and I have not had any engine trouble. Or maybe run 10w 30 in the summer and 5w 50 in the winter? I cant hardly justify the extra for synthetic. Motorcraft oil seems like a bargain for what it is to me. </p><p></p><p>Thanks for any insight.</p><p></p><p>I forgot to add here in Kentucky we get extreme weather from 10 degrees and sometimes lower than that up to 100 and thats not uncommon either.</p></blockquote><p></p>
[QUOTE="3Mach1, post: 10794190, member: 135424"] Here is my question. I have an older 03 year 4.6 4v engine and all I have ever put in it is motorcraft 5w 20. I dont race it or beat on it but on occasion like to open it up. With all I have read here would I be better off to run 10w 30 motorcraft or 5w 30? It runs year round and I have not had any engine trouble. Or maybe run 10w 30 in the summer and 5w 50 in the winter? I cant hardly justify the extra for synthetic. Motorcraft oil seems like a bargain for what it is to me. Thanks for any insight. I forgot to add here in Kentucky we get extreme weather from 10 degrees and sometimes lower than that up to 100 and thats not uncommon either. [/QUOTE]
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